Re: [ALUG] Bash script to test serial ports

Stuart Bailey <stuart@linusoft.co.uk> [...]

while read -t 2 -u 4 RESULT [...] I thought the read -t 2 ... should timeout after 2 seconds if no data is received. Any idea why this hangs?

Does that work other than when reading from a pipe or live terminal? The -u is pointing it at a file descriptor, so that might hang it.

Also, is there a better way to test these ports? The system I am trying to test is limited - perl and awk are not installed.

I can't think of one on that limited a system. Hope that helps, -- MJ Ray - personal email, see http://mjr.towers.org.uk/email.html Work: http://www.ttllp.co.uk/ irc.oftc.net/slef Jabber/SIP ask